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    Power supply apparatus, and image forming apparatus having the same
    1.
    发明授权
    Power supply apparatus, and image forming apparatus having the same 有权
    电源装置和具有该电源装置的图像形成装置

    公开(公告)号：US07265479B2

    公开(公告)日：2007-09-04

    申请号：US11275635

    申请日：2006-01-20

    申请人： Atsuhiko Yamaguchi ,  Hiroshi Mano ,  Osamu Nagasaki ,  Kouji Yasukawa

    发明人： Atsuhiko Yamaguchi ,  Hiroshi Mano ,  Osamu Nagasaki ,  Kouji Yasukawa

    IPC分类号： H01L41/107

    CPC分类号： H02M3/28 ,  G03G15/80 ,  H02M1/14 ,  H02M3/156 ,  H02M2001/008

    摘要： In a power supply apparatus including a plurality of power supply circuits, each of the power supply circuits has a piezoelectric transformer, a rectification element which rectifies and smoothes a voltage output from the piezoelectric transformer in accordance with a load and outputs the voltage, a voltage-controlled oscillator which controls the frequency of an output signal in accordance with an input control signal, and a power supply voltage supply element which is driven by a signal output from the voltage-controlled oscillator and supplies a power supply voltage to the piezoelectric transformer. One power supply circuit includes a resonance frequency change unit which is connected to the output side of the piezoelectric transformer. The resonance frequency change unit drives the piezoelectric transformer of the power supply circuit at a driving frequency which is different from the driving frequency of the piezoelectric transformer in another power supply circuit by shifting the peak of the resonance frequency.

    摘要翻译： 在包括多个电源电路的电源装置中，每个电源电路具有压电变压器，整流元件，用于根据负载对从压电变压器输出的电压进行整流和平滑，并输出电压 控制的振荡器，其根据输入控制信号控制输出信号的频率;以及电源电压供应元件，其由从压控振荡器输出的信号驱动并将电源电压提供给压电变压器。 一个电源电路包括连接到压电变压器的输出侧的谐振频率改变单元。 谐振频率改变单元通过使谐振频率的峰值偏移来驱动电源电路的压电变压器，该驱动频率与另一个电源电路中的压电变压器的驱动频率不同。

    POWER SUPPLY APPARATUS, AND IMAGE FORMING APPARATUS HAVING THE SAME
    2.
    发明申请
    POWER SUPPLY APPARATUS, AND IMAGE FORMING APPARATUS HAVING THE SAME 有权
    电源装置和具有该电源装置的图像形成装置

    公开(公告)号：US20060220495A1

    公开(公告)日：2006-10-05

    申请号：US11275635

    申请日：2006-01-20

    申请人： ATSUHIKO YAMAGUCHI ,  HIROSHI MANO ,  OSAMU NAGASAKI ,  Kouji Yasukawa

    发明人： ATSUHIKO YAMAGUCHI ,  HIROSHI MANO ,  OSAMU NAGASAKI ,  Kouji Yasukawa

    IPC分类号： H01L41/107

    CPC分类号： H02M3/28 ,  G03G15/80 ,  H02M1/14 ,  H02M3/156 ,  H02M2001/008

    摘要： In a power supply apparatus including a plurality of power supply circuits, each of the power supply circuits has a piezoelectric transformer, a rectification element which rectifies and smoothes a voltage output from the piezoelectric transformer in accordance with a load and outputs the voltage, a voltage-controlled oscillator which controls the frequency of an output signal in accordance with an input control signal, and a power supply voltage supply element which is driven by a signal output from the voltage-controlled oscillator and supplies a power supply voltage to the piezoelectric transformer. One power supply circuit includes a resonance frequency change unit which is connected to the output side of the piezoelectric transformer. The resonance frequency change unit drives the piezoelectric transformer of the power supply circuit at a driving frequency which is different from the driving frequency of the piezoelectric transformer in another power supply circuit by shifting the peak of the resonance frequency.

    摘要翻译： 在包括多个电源电路的电源装置中，每个电源电路具有压电变压器，整流元件，用于根据负载对从压电变压器输出的电压进行整流和平滑，并输出电压 控制的振荡器，其根据输入控制信号控制输出信号的频率;以及电源电压供应元件，其由从压控振荡器输出的信号驱动并将电源电压提供给压电变压器。 一个电源电路包括连接到压电变压器的输出侧的谐振频率改变单元。 谐振频率改变单元通过使谐振频率的峰值偏移来驱动电源电路的压电变压器，该驱动频率与另一个电源电路中的压电变压器的驱动频率不同。

    Power supply apparatus, and image forming apparatus having the same
    3.
    发明授权
    Power supply apparatus, and image forming apparatus having the same 有权
    电源装置和具有该电源装置的图像形成装置

    公开(公告)号：US07425789B2

    公开(公告)日：2008-09-16

    申请号：US11275636

    申请日：2006-01-20

    申请人： Kouji Yasukawa ,  Hiroshi Mano ,  Atsuhiko Yamaguchi ,  Osamu Nagasaki

    发明人： Kouji Yasukawa ,  Hiroshi Mano ,  Atsuhiko Yamaguchi ,  Osamu Nagasaki

    IPC分类号： H01L41/107

    CPC分类号： H01L41/044 ,  G03G15/80

    摘要： A power supply apparatus includes a piezoelectric transformer which outputs a voltage, a voltage-controlled oscillator which controls the frequency of an output signal in accordance with an input control signal, a power supply voltage supply element which is driven by a signal output from the voltage-controlled oscillator and applies a power supply voltage to the piezoelectric transformer, and an output voltage stop circuit (118) which outputs a signal for stopping driving the piezoelectric transformer on the basis of a control signal (Vcont).

    摘要翻译： 电源装置包括输出电压的压电变压器，根据输入控制信号控制输出信号的频率的压控振荡器，由从电压输出的信号驱动的电源电压供给元件 控制振荡器，并向压电变压器施加电源电压;以及输出电压停止电路（118），其基于控制信号（Vcont）输出用于停止驱动压电变压器的信号。

    POWER SUPPLY UNIT IN IMAGE FORMING APPARATUS
    5.
    发明申请
    POWER SUPPLY UNIT IN IMAGE FORMING APPARATUS 有权
    图像形成装置中的电源单元

    公开(公告)号：US20060222398A1

    公开(公告)日：2006-10-05

    申请号：US11275634

    申请日：2006-01-20

    申请人： Osamu Nagasaki ,  Atsuhiko Yamaguchi ,  Tomohiro Nakamori ,  Takehiro Uchiyama ,  Kouji Yasukawa ,  Teruhiko Namiki ,  Hiroki Murata

    发明人： Osamu Nagasaki ,  Atsuhiko Yamaguchi ,  Tomohiro Nakamori ,  Takehiro Uchiyama ,  Kouji Yasukawa ,  Teruhiko Namiki ,  Hiroki Murata

    IPC分类号： G03G15/00

    CPC分类号： G03G15/80

    摘要： A power supply unit in an image forming apparatus is provided. The power supply unit includes a piezoelectric transformer, an output voltage detecting circuit which detects the output voltage of the piezoelectric transformer, a comparator which receives an output voltage setting signal, together with an output voltage detecting signal fed back from the output voltage detecting circuit, to compare the output voltage setting signal and the output voltage detecting signal, and a driving frequency supplying circuit which generates the driving frequency of the piezoelectric transformer in accordance with a comparison result by the comparator, and supplies the resultant driving frequency to the piezoelectric transformer. The time constant of the output voltage setting signal is longer than the time constant of the output voltage detecting circuit.

    摘要翻译： 提供了图像形成装置中的电源单元。 电源单元包括压电变压器，检测压电变压器的输出电压的输出电压检测电路，接收输出电压设定信号的比较器以及从输出电压检测电路反馈的输出电压检测信号， 比较输出电压设定信号和输出电压检测信号;以及驱动频率提供电路，其根据比较器的比较结果生成压电变压器的驱动频率，并将得到的驱动频率提供给压电变压器。 输出电压设定信号的时间常数大于输出电压检测电路的时间常数。

    Power supply unit in image forming apparatus
    7.
    发明授权
    Power supply unit in image forming apparatus 有权
    图像形成装置中的电源单元

    公开(公告)号：US07548708B2

    公开(公告)日：2009-06-16

    申请号：US11275634

    申请日：2006-01-20

    申请人： Osamu Nagasaki ,  Atsuhiko Yamaguchi ,  Tomohiro Nakamori ,  Takehiro Uchiyama ,  Kouji Yasukawa ,  Teruhiko Namiki ,  Hiroki Murata

    发明人： Osamu Nagasaki ,  Atsuhiko Yamaguchi ,  Tomohiro Nakamori ,  Takehiro Uchiyama ,  Kouji Yasukawa ,  Teruhiko Namiki ,  Hiroki Murata

    IPC分类号： G03G15/00 ,  H01L41/00

    CPC分类号： G03G15/80

    摘要： A power supply unit in an image forming apparatus is provided. The power supply unit includes a piezoelectric transformer, an output voltage detecting circuit which detects the output voltage of the piezoelectric transformer, an output voltage control circuit which controls an output voltage from the piezoelectric transformer, and includes a comparator which receives an output voltage setting signal, together with an output voltage detecting signal fed back from the output voltage detecting circuit, to compare the output voltage setting signal and the output voltage detecting signal. The power supply unit also includes a driving frequency supplying circuit which generates a driving frequency signal of the piezoelectric transformer in accordance with a comparison result by the comparator, and supplies the driving frequency signal to the piezoelectric transformer. The time constant of the output voltage control circuit is longer than the time constant of the output voltage detecting circuit.

    摘要翻译： 提供了图像形成装置中的电源单元。 电源单元包括压电变压器，检测压电变压器的输出电压的输出电压检测电路，控制来自压电变压器的输出电压的输出电压控制电路，并包括接收输出电压设定信号的比较器 与从输出电压检测电路反馈的输出电压检测信号一起比较输出电压设定信号和输出电压检测信号。 电源单元还包括驱动频率提供电路，其根据比较器的比较结果产生压电变压器的驱动频率信号，并将驱动频率信号提供给压电变压器。 输出电压控制电路的时间常数大于输出电压检测电路的时间常数。

    Power supply device and image forming apparatus
    8.
    发明授权
    Power supply device and image forming apparatus 有权
    电源装置和图像形成装置

    公开(公告)号：US07898149B2

    公开(公告)日：2011-03-01

    申请号：US11953847

    申请日：2007-12-10

    申请人： Kouji Yasukawa

    发明人： Kouji Yasukawa

    IPC分类号： H01L41/107

    CPC分类号： G03G15/5004 ,  G03G15/16 ,  H01L41/044

    摘要： A power supply device is disclosed that outputs a voltage of a wider range with a single piezoelectric transformer. The power supply device includes a piezoelectric transformer 101 for applying an output voltage to a transfer member that transfers a toner image formed on an image bearing member onto a recording material. The power supply device further includes a generation unit 110 configured to generate a driving frequency for driving the piezoelectric transformer 101. A control unit 701 controls a spurious voltage by changing driving frequency characteristics of the power supply device in accordance with a target value of an output voltage Vout.

    摘要翻译： 公开了一种使用单个压电变压器输出更宽范围电压的电源装置。 电源装置包括压电变压器101，用于向形成在图像承载部件上的调色剂图像转印到记录材料上的转印部件施加输出电压。 电源装置还包括生成单元110，其被配置为产生用于驱动压电变压器101的驱动频率。控制单元701根据输出的目标值改变电源装置的驱动频率特性来控制杂散电压 电压Vout。